JPS59148493U

JPS59148493U - vane pump

Info

Publication number: JPS59148493U
Application number: JP4258883U
Authority: JP
Inventors: 実方　静夫
Original assignee: 厚木自動車部品株式会社
Priority date: 1983-03-24
Filing date: 1983-03-24
Publication date: 1984-10-04

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来のベーンポンプを示す縦断面図、第２図は
本考案に係るベーンポンプの一実施例を示す縦断面図で
ある。１・・・回転軸、３・・・ケーシング、３ａ・・・内周
面、４・・・ロータ、５・・・ベーン、６・・・カムリ
ンク、６ａ・・・一端面、７・・・サイドプレート、７
ａ、２０ａ・・・−側面、７ｂ・・・他側面、８・・・
ポンプ室、９・・・吐出ポート、１０・・・吐出室、２
０・・・プレッシャープレート、２０ａ・・・−側面、
１２・・・コイルスプリング、１７・・・吐出通路、２
１・・・隔離部、２２・・・第１吐出室、２３・・・第
２吐出室、２４・・・小穴。FIG. 1 is a longitudinal sectional view showing a conventional vane pump, and FIG. 2 is a longitudinal sectional view showing an embodiment of the vane pump according to the present invention. DESCRIPTION OF SYMBOLS 1... Rotating shaft, 3... Casing, 3a... Inner peripheral surface, 4... Rotor, 5... Vane, 6... Cam link, 6a... One end surface, 7...・Side plate, 7
a, 20a...-side, 7b...other side, 8...
Pump chamber, 9...Discharge port, 10...Discharge chamber, 2
0...Pressure plate, 20a...-side,
12...Coil spring, 17...Discharge passage, 2
DESCRIPTION OF SYMBOLS 1... Isolation part, 22... First discharge chamber, 23... Second discharge chamber, 24... Small hole.

Claims

[Scope of utility model registration request]

a casing rotatably supporting a rotating shaft; a rotor disposed inside the casing and rotated by the rotating shaft; a large number of vanes attached to the rotor so as to be retractable in a substantially radial direction; a substantially cylindrical cam ring that is housed in the rotor and surrounds the rotor and each vane and forms a working chamber between adjacent vanes; a side plate that has one side surface that covers one end surface of the cam ring; a pressure plate forming a discharge chamber from which hydraulic oil is discharged from the working chamber through a discharge port communicating between one side surface and the other side surface of the side plate; In the vane pump, the vane pump includes a coil spring that is elastically loaded between the other side surface of the side plate and presses one side surface of the side plate against one end surface of the cam ring. - A first generally cylindrical isolation portion protruding from the other side and communicating with the discharge port;
It is divided into two chambers, a discharge chamber and a second discharge chamber communicating with a discharge passage formed in the casing, and a small hole is provided in the isolation part to communicate the first discharge chamber and the second discharge chamber. The vane pump is characterized in that the hydraulic oil discharged from the pump chamber into the first discharge chamber is guided to the discharge passage via the second discharge chamber after passing through the small hole. .